Gold King — Houston gold and silver buyer
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Houston, TX · 18+ years

Sell Diamonds in Houston, TX

Gold King buys loose and mounted diamonds in Houston, working with a partnering gemologist to evaluate each stone before making an offer.

Gold King works with a partnering gemologist to evaluate diamonds based on characteristics such as clarity, color, size, and type. GIA certification and other supporting documentation can be helpful during the evaluation process. Diamonds are valued separately from gold, as luxury goods, and we quote a cash price for the diamond plus the metal it is set in.

Call 713-997-0875
Payment
Cash, wire, checks, Zelle & more
Appraisal
Free, no obligation
Hours
Mon–Thu 9:30AM–7PM, Fri–Sat 9:30AM–8PM, Sun 12–7PM
Diamond engagement rings and fine jewelry appraised at Gold King in Houston

What Gold King buys

Diamond items

  • Engagement rings and wedding sets
  • Loose diamonds of all sizes and carat weights
  • Tennis bracelets and diamond tennis necklaces
  • Diamond studs, halos and cluster pieces

Also considered

  • Certified stones with GIA, AGS or IGI reports
  • Old European, old mine and rose cuts
  • Fancy shapes — oval, emerald, pear, marquise, cushion
  • Estate and inherited diamond jewelry

GIA and certified diamonds

If your diamond came with a GIA, AGS or IGI report, bring it. A grading report from a respected lab removes the disagreement over color and clarity that otherwise sits at the center of every diamond negotiation, and it lets the stone be priced directly against current market data for that exact grade combination.

GIA reports carry the most weight in the trade. Reports from labs known to grade loosely still help by confirming measurements and identifying whether a stone is natural or lab-grown, but the stone is still evaluated by our partnering gemologist rather than taken at face value.

No report is not a problem. Gold King works with a partnering gemologist to evaluate diamonds based on characteristics such as clarity, color, size, and type. GIA certification and other supporting documentation can be helpful during the evaluation process. Certification is never required to sell.

What actually moves a diamond offer

Carat weight is the loudest factor but not the only one — the market steps up sharply at half-carat and full-carat boundaries, so a 0.98 ct and a 1.02 ct can differ more than the weight suggests. Cut quality drives brightness and is where poorly proportioned stones lose value quietly.

Fluorescence, chips on the girdle, and treatments such as fracture filling or laser drilling all affect resale and are checked and disclosed. Lab-grown diamonds are identified with testing and priced honestly against a market that sits far below natural stones.

Also useful: selling a full estate with diamonds.

Selling a diamond ring in Houston

Engagement rings are the most common diamond sale we handle, and they are valued as two numbers added together: the center stone plus any accent diamonds, and the gold or platinum mounting by weight. You see both figures rather than one blended total.

Bring the ring, any grading report or appraisal you have, and a valid photo ID to 6809 Southwest Freeway, Houston, TX 77074, open Monday–Thursday 9:30 AM–7:00 PM, Friday–Saturday 9:30 AM–8:00 PM and Sunday 12:00–7:00 PM. Insurance appraisals state replacement cost, not resale value, so expect the two numbers to differ — we will explain why.

Also useful: sell other fine jewelry the same visit.

Ready for a free evaluation? Call 713-997-0875 or visit 6809 Southwest Freeway, Houston, TX 77074.

How we price it

  • The diamond and the mounting are valued separately and added together.
  • Grading reports speed the process but are not required.
  • Lab-grown diamonds are identified honestly and priced accordingly.

The buying process

  1. 1

    Bring it in

    Walk in during store hours, or call 713-997-0875 to arrange an after-hours appointment.

  2. 2

    Gemologist evaluation

    A partnering gemologist evaluates diamonds of all sizes on clarity, color, size and type. GIA certification or other paperwork can help but is not required. The evaluation takes place in front of you and is normally completed the same day. Depending on the partnering gemologist's availability, you may need to wait — up to about two hours when evaluations are backed up — or arrange to return, and in certain circumstances a complete evaluation may take up to 24 hours.

  3. 3

    You get an offer

    A firm offer based on the diamond's characteristics and the current diamond market.

  4. 4

    Get paid — cash on the spot or your choice

    Accept our offer and receive cash on the spot, or choose another available payment method: wire transfer, cashier's or business check, Bitcoin or other cryptocurrency, Zelle, Venmo, PayPal, Cash App or gift card, including for high-value items. Payment in gold, silver or platinum can also be discussed and negotiated. Or decline and take your items home.

Selling other valuables, too? See our related Houston services: Sell Estate Jewelry, Jewelry Buyer and Sell Gold. Items you bring together are evaluated at the same visit and combined into one offer. You can also see what Houston sellers bring us or get directions to our Southwest Freeway store.

Sell Diamonds — Questions & Answers

Who buys diamonds in Houston?
Gold King at 6809 Southwest Freeway buys loose and mounted diamonds in Houston, working with a partnering gemologist who evaluates clarity, color, size and type in front of you. Evaluations are normally completed the same day. Call 713-997-0875.
Is there a minimum diamond size?
No. Gold King purchases diamonds of all sizes and carat weights. There is no minimum diamond-size requirement. We consider individual diamonds, multiple smaller diamonds, and larger stones, whether loose or mounted.
How long does a diamond evaluation take?
Gold King evaluates diamonds in front of you with the assistance of its partnering gemologist. Evaluations are normally completed the same day. Depending on the gemologist's availability and the evaluation schedule, you may need to wait — up to about two hours when evaluations are backed up — or arrange to return at a later time. In certain circumstances, a complete evaluation may take up to 24 hours.
Do I need a GIA certificate to sell a diamond?
No. GIA certification and other supporting documentation can be helpful during the evaluation, but they are not required. Gold King works with a partnering gemologist to evaluate diamonds based on characteristics such as clarity, color, size and type.
Do you buy lab-grown diamonds?
We test every stone and will tell you if it is lab-grown or moissanite. Lab-grown diamonds have a much lower resale value than natural stones, and we quote accordingly.
Where can I sell a diamond in Houston?
Gold King buys loose and mounted diamonds at 6809 Southwest Freeway, Houston, TX 77074, working with a partnering gemologist to evaluate each stone in front of you, with evaluations normally completed the same day. Call 713-997-0875.
Does a GIA certificate increase what I get for my diamond?
It can. A GIA report confirms grading independently, which removes uncertainty and supports pricing directly against market data for that grade. Stones without reports are evaluated by our partnering gemologist at no charge.
Why is my offer lower than my insurance appraisal?
Insurance appraisals state retail replacement cost, which includes markup, setting labor and tax. A resale offer reflects what the stone and metal are worth in the current secondary market.

Guides to read first

Before you sell, it helps to know how the offer is calculated. These Gold King guides cover it in plain language:

Get a free appraisal today

Walk in at 6809 Southwest Freeway, Houston, TX 77074 — Open Monday–Thursday 9:30 AM–7:00 PM, Friday–Saturday 9:30 AM–8:00 PM, Sunday 12:00–7:00 PM. After-hours appointments available by phone.

Call 713-997-0875